Me neither, saying that, I’ve just stripped down 2 hubs for the first time in 3 years & they are in perfect condition apart from some scaling on the discs. I only stripped them because I felt I ought to. Should’ve left them alone.

Hi Mick, do you know if there is a way to fit those rollers on a standard roller trailer? Mines a bramber roller. I need to find a way of lifting the boat up on the trailer by a couple inches so the keel doesn’t rest on the centre roller ...Attachment 127523

Get a roller bunk system ! , all aircraft grade ally , adjustable height and you never need your wheels in above tyre wall , you can drop your boat off onto the back lawn if you fancy, and then winch it back on again , i too left the boat show with a vc brochure ,beutifully engineered ,did,nt ask if it was 316 st st .but assume at the price it is ,certainly would,nt see any benefit if its magnetic .
I have a note on my brochure that disc brakes are £1000 per axle extra

They are 304. The magnetic properties of raw 304 & 316 are similar, I.e generally not very magnetically attractive. The addition of Nickel reduces magnetic attraction, but this isn’t the whole story. The way the metal is worked has a big impact on its magnetic properties, heating, cooling, forging, welding will all affect the way stainless reacts with a magnet, consider your expensive kitchen knives & the magnetic knife rack. The same grades of stainless can be made magnetic/non-magnetic just by applying various post production treatments.

Also asked about the stainless alloy - as I guess you know 304 isn’t as good as 316 from a corrosion perspective but 316 in considerably more expensive

Yes i am not really sure 304 is worth the bother alone ,its the hubs or discs that make these trailers attractive ,not sure 304 would stand up any longer than unbroken galvanised British steel ,by unbroken i mean beefore someone decides to cut a foot off or drill a few holes for mounting a step or similar .